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speed of the car is 47.52 km/hr. a lorry wheel is rotating at 400 RPM. what is radius (in cm) of a lorry wheel has a same speed with the car

See previous post: Sun,12-7-14, 1:41 AM.

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speed of the car is 47.52 km/hr. a lorry wheel is rotating at 400 RPM. what is the radius (in cm) of a lorry wheel if the lorry

Top answer: since car and lorry wheel has same speed so kinetic energy of car = rotational energy of lorry wheel Read more.
speed of the car is 47.52 km/hr. a lorry wheel is rotating at 400 RPM. what is radius (in cm) of a lorry wheel has a same speed

Top answer: 400rev/min * 60min/h = 24,000 rev/h. Circumference(C) = 47,520m/24,000rev = 1.98 m/rev C = pi*2r = Read more.
A wheel has a 12 inch radius rotating at 620 RPM. What is the speed of the car in MPH?

Top answer: circumference = 24π inches so speed = 24π(620) inches/min = 14880π/(12(5280)) miles/min = Read more.
The distance between towns M and N is 280km.A car travelled from M- N .The average speed of the lorry is 20km/hr less than that

Top answer: since time = distance/speed, 280/(x+20) = 280/x - 7/6 x = 60 check: 280/80 = 3 hr 30 min 280/60 = 4 Read more.
The distance between towns M and N is 280 km. A car and a lorry travel from M to N.The average speed of the lorry is 20 km/h

Top answer: lneed answer Read more.
The distance between towns M and N is 280 km. A car and a lorry travel from M to N. The average speed of the lorry is 20 km/h

Top answer: speed of lorry ---- x km/h speed of car ----- x+20 km/h time for the car = 280/(x+20) time for lorry Read more.
The distance between towns A and B is 280 km.A car and a lorry travel from A to B.The average speed of the lorry is 20km/hr less

Top answer: speed of car ---- x km/h speed of lorry -- x-20 km/h time taken by car = 280/x hrs time taken by Read more.
A wheel on a moving car slows uniformly from 420 rpm to 120 rpm in 4 sec.A. What is the angular acceleration of the wheel? B.

Top answer: angular acceration=(120-420)/4 in rpm/sec now to change that to radians/sec^2 multipy by 2PI/60 to Read more.
A wheel on a moving car slows uniformly from 420 rpm to 120 rpm in 4 sec.A. What is the angular acceleration of the wheel? B.

Top answer: 420 rev/min = 420 * 2 pi /60 = 44 radians/second 120 rpm = 12.6 rad/s alpha = (12.6 - 44 ) /4 = Read more.
Two lorries A and B ferry goods between two towns which are 3120km apart .Lorry A travelled at 5km/h faster than lorry B and

Top answer: Speed of lorry B --- x speed of lorry A ---- x+5 km/h time for lorry B = 3120/x time for lorry A = Read more.